<template>
  <el-container>
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/logo.png">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 右侧内容 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <!-- 一级菜单 -->
        <el-menu  background-color="#333744" text-color="#fff" active-text-color="#409BFF" unique-opened :collapse="isCollapse" router :default-active="activePath">
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconList[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)"><template slot="title">
              <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template></el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
  export default {
    data(){
      return{
        isCollapse:false,
        activePath:'',
        menulist:[],
        iconList:{
          '125':'el-icon-s-custom',
          '103':'el-icon-s-cooperation',
          '101':'el-icon-s-shop',
          '102':'el-icon-s-claim',
          '145':'el-icon-s-data'
        }
      }
    },
    created(){
      this.getMenuList(),
      this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods: {
      //保存链接的激活状态
      saveNavState(activePath){          //键         值
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
      },
      //点击按钮切换菜单的折叠和展开
      toggleCollapse(){
        this.isCollapse=!this.isCollapse
      },
      logout() {
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      async getMenuList(){
      const {data:res} = await this.$axios.get('menus')
      if(res.meta.status!==200) return this.$message.error('res.meta.msg')
      this.menulist=res.data
      // console.log(res);
      }
    }
  }
</script>
<style lang="less" scoped>
  .el-container {
    height: 100%;
  }

  .el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    >div {
      display: flex;
      align-items: center;
      >img {
        width: 60px;
        height: 60px;
        margin-right: 15px;
        margin-left: 10px;
      }
    }
  }
  .el-aside {
    background-color: #333744;
  }

  .el-main {
    background-color: #eaedf1;
  }
  .el-submenu [class^=el-icon-] {
    margin-right: 10px;
  }
  .el-menu {
    border-right:0
}
   .toggle-button{
     background-color: #4A5064;
     font-size: 10px;
     line-height: 24px;
     color:#fff;
     text-align: center;
     letter-spacing: 0.2em;
     cursor: pointer;
     

   }

</style>